Animate showing / hiding the location bar for bookmark apps.

chrome/browser/ui/views/location_bar/location_bar_view.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_VIEW_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 35 matching lines @@
 class SelectedKeywordView;
 class StarView;
 class TemplateURLService;
 class TranslateIconView;
 class ZoomView;
 
 namespace content {
 struct SSLStatus;
 }
 
+namespace gfx {
+class SlideAnimation;
+}
+
 namespace views {
 class BubbleDelegateView;
 class ImageButton;
 class ImageView;
 class Label;
 class Widget;
 }
 
 /////////////////////////////////////////////////////////////////////////////
 //
 // LocationBarView class
 //
 //   The LocationBarView class is a View subclass that paints the background
 //   of the URL bar strip and contains its content.
 //
 /////////////////////////////////////////////////////////////////////////////
 class LocationBarView : public LocationBar,
                         public LocationBarTesting,
                         public views::View,
                         public views::ButtonListener,
                         public views::DragController,
+                        public gfx::AnimationDelegate,
                         public OmniboxEditController,
                         public DropdownBarHostDelegate,
                         public TemplateURLServiceObserver,
                         public SearchModelObserver,
                         public ui_zoom::ZoomEventManagerObserver {
  public:
   // The location bar view's class name.
   static const char kViewClassName[];
 
   // Returns the offset used during dropdown animation.
@@ skipping 253 matching lines @@
   void ShowFirstRunBubble() override;
   GURL GetDestinationURL() const override;
   WindowOpenDisposition GetWindowOpenDisposition() const override;
   ui::PageTransition GetPageTransition() const override;
   void AcceptInput() override;
   void FocusSearch() override;
   void UpdateContentSettingsIcons() override;
   void UpdateManagePasswordsIconAndBubble() override;
   void UpdatePageActions() override;
   void UpdateBookmarkStarVisibility() override;
+  void UpdateLocationBarState(bool visible, bool animation) override;
   bool ShowPageActionPopup(const extensions::Extension* extension,
                            bool grant_active_tab) override;
   void UpdateOpenPDFInReaderPrompt() override;
   void UpdateGeneratedCreditCardView() override;
   void SaveStateToContents(content::WebContents* contents) override;
   const OmniboxView* GetOmniboxView() const override;
   LocationBarTesting* GetLocationBarForTesting() override;
 
   // LocationBarTesting:
   int PageActionCount() override;
@@ skipping 16 matching lines @@
 
   // views::DragController:
   void WriteDragDataForView(View* sender,
                             const gfx::Point& press_pt,
                             OSExchangeData* data) override;
   int GetDragOperationsForView(View* sender, const gfx::Point& p) override;
   bool CanStartDragForView(View* sender,
                            const gfx::Point& press_pt,
                            const gfx::Point& p) override;
 
+  // gfx::AnimationDelegate:
+  void AnimationProgressed(const gfx::Animation* animation) override;
+  void AnimationEnded(const gfx::Animation* animation) override;
+
   // OmniboxEditController:
   void OnChanged() override;
   void OnSetFocus() override;
   InstantController* GetInstant() override;
   const ToolbarModel* GetToolbarModel() const override;
 
   // DropdownBarHostDelegate:
   void SetFocusAndSelection(bool select_all) override;
   void SetAnimationOffset(int offset) override;
 
@@ skipping 65 matching lines @@
 
   // The page action icon views.
   PageActionViews page_action_views_;
 
   // The icon for Translate.
   TranslateIconView* translate_icon_view_;
 
   // The star.
   StarView* star_view_;
 
+  // Animation to control showing / hiding the location bar.
+  scoped_ptr<gfx::SlideAnimation> size_animation_;

[Peter Kasting, 2015/04/01 20:27:43]

Why a scoped_ptr?  Seems like this could just be a normal member.

[benwells, 2015/04/02 00:36:54]

Done.

+
   // Whether we're in popup mode. This value also controls whether the location
   // bar is read-only.
   const bool is_popup_mode_;
 
   // True if we should show a focus rect while the location entry field is
   // focused. Used when the toolbar is in full keyboard accessibility mode.
   bool show_focus_rect_;
 
   // This is in case we're destroyed before the model loads. We need to make
   // Add/RemoveObserver calls.
   TemplateURLService* template_url_service_;
 
   // Tracks this preference to determine whether bookmark editing is allowed.
   BooleanPrefMember edit_bookmarks_enabled_;
 
   // During dropdown animation, the host clips the widget and draws only the
   // bottom part of it. The view needs to know the pixel offset at which we are
   // drawing the widget so that we can draw the curved edges that attach to the
   // toolbar in the right location.
   int dropdown_animation_offset_;
 
   // This is a debug state variable that stores if the WebContents was null
   // during the last RefreshPageAction.
   bool web_contents_null_at_last_refresh_;
 
   DISALLOW_COPY_AND_ASSIGN(LocationBarView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_VIEW_H_